Zoas are dying?

[Waleedwale1]

My zoa tank is a 60g shallow tank, the lighting consists of 2 evergrow D120 fixtures, no fish. Flow is med/high thought the tank.

Now earlier this week I had a colony go from 60 polyps to 2 polyps. This colony was about a year old and had been in the tank for 6 months, without any issues. I thought it was an isolated incident however today I look in the tank and see that my red Hornet colony is in similar condition. The polyps are all closed and look like this


similar to the other colony before the Zoas died. I did an iodine dip and moved them to a different tank. Any ideas what could be causing this and what I should do about it? Most of my other Zoas look fine as of now but I don't want to continue losing colonies. Haven't made any recent changes to the tank either.

 

[Tonyscoots84]

Is this zoa tank attached to your main display? If not you might want to get some nutrients in that tank just my thought on whats happening. Unless you have something in the zoa tank thats eating your zoa's....

 

[Waleedwale1]

No the zoa tank (60g) has no fish. I just moved the colony to my biocube which has 2 clowns and a goby. I'll see if I can get some fish into the 60g

 

[Waleedwale1]

 

[Tonyscoots84]

You need some nutrients in that tank. It needs to be fed and needs some fish waste. Unless you have a parasite......

 

[Clink51]

did you introduce anything recently? i wanna say bugs just because they were doing great for 6 months and then that changed from one day to another. keep us updated man

 

[Waleedwale1]

I picked up a large colony yesterday but it wouldn't make sense for the Zoas that died about a week ago, and the colony I got yesterday is doing great. Some people on other forums said Zoa pox, but mike have discolored spots instead of the pimples. Regardless a small store near me has Furan2, the suggested treatment for zoa pox so I'm gonna head over there and get some, this colony isn't looking good it'll be gone in a day or two so I might as well try that. Other than that I'm gonna pickup some fish soon.